E102 Maximum and Minimum Elements of Arrays

Function subprograms MAXIZE, MAXRZE, MAXDFZ and MINIZE, MINRZE, MINDFZ give give the positions of the maximum and minimum elements of a one-dimensional array.

On CDC and Cray computers, the double-precision versions MAXDZE and MINDZE are not available.

Structure:

FUNCTION subprograms
User Entry Names: MAXIZE, MAXRZE, MAXDZE, MINIZE, MINRZE, MINDZE
Obsolete User Entry Names: MAXFZE $\equiv$ MAXRZE, MINFZE $\equiv$ MINRZE

Usage:

In any arithmetic expression, for $t=I$ (type INTEGER), $t=R$ (type REAL), $t=D$

(type DOUBLE PRECISION), MAXtZE(A(J),N) and MINtZE(A(J),N)

has the INTEGER value of the location of, respectively, the maximum and minimum elements of the N successive elements of the array A, relative to the element A(J), where A is of type t.

Notes:

1. If there is more than one location at which the maximum or minimum is attained, the first location is returned as the function value in each case.
2. If the function value is 1.
3. Clearly, N+J should not exceed the dimension of the array A.
4. The obsolete older entries MAXFZE (for MAXRZE) and MINFZE (for MINRZE) are kept for a transitional period. They will eventually disappear.

E103